/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.accumulo.shell.commands;

import static java.nio.charset.StandardCharsets.UTF_8;

import java.io.File;
import java.util.Scanner;

import org.apache.accumulo.shell.Shell;
import org.apache.accumulo.shell.Shell.Command;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;

import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;

public class ExecfileCommand extends Command {
  private Option verboseOption;

  @Override
  public String description() {
    return "specifies a file containing accumulo commands to execute";
  }

  @SuppressFBWarnings(value = "PATH_TRAVERSAL_IN",
      justification = "app is run in same security context as user providing the filename")
  @Override
  public int execute(final String fullCommand, final CommandLine cl, final Shell shellState)
      throws Exception {
    try (Scanner scanner = new Scanner(new File(cl.getArgs()[0]), UTF_8)) {
      while (scanner.hasNextLine()) {
        shellState.execCommand(scanner.nextLine(), true, cl.hasOption(verboseOption.getOpt()));
      }
    }
    return 0;
  }

  @Override
  public String usage() {
    return getName() + " <fileName>";
  }

  @Override
  public int numArgs() {
    return 1;
  }

  @Override
  public Options getOptions() {
    final Options opts = new Options();
    verboseOption =
        new Option("v", "verbose", false, "display command prompt as commands are executed");
    opts.addOption(verboseOption);
    return opts;
  }
}
